ldap_dn2ufn()

(PHP 4, PHP 5, PHP 7)

Convert DN to User Friendly Naming format

说明

ldap_dn2ufn(string $dn): string

Turns the specified$dn, into a more user-friendly form, stripping off type names.

参数

$dn

The distinguished name of an LDAP entity.

返回值

Returns the user friendly name.

This function will convert "cn=bryan,ou=users,ou=admin,o=apachetoolbox" to "bryan,users,admin,apachetoolbox".

function ldap_unf2dn($unf,$delimeter=".") {
 $seperated = explode($delimeter,$unf); //split the unf up by the given delimeter
 $LastKey=count($seperated)-1;     //0 is the first key to total-1 would be the last key        
 foreach($seperated as $key => $value) {
 if ($key == 1) {       //first variable is the CN
  $dn="${dn}cn=$value,";
 } elseif ($key == $LastKey) { //last variable, so it's the O
  $dn="${dn}o=$value";
 } elseif ($value == "") {   //value is blank, so continue
  continue;
 } else {           //just a typical OU
  $dn="${dn}ou=$value,";
 }
  
 };
return $dn;
}
$unf=".bryan.users.admin.apachetoolbox"; 
$dn=ldap_unf2dn($unf);
print "$dn" // will give me "cn=bryan,ou=users,ou=TS,o=apachetoolbox"

Don't know if anyone is interested in this, but this is a modified and more dynamic version of the posting below. Since ldap_dn2ufn takes ',' as delimiter for the UFNs, we'll also use it here. $pHowToBuild specifies, how the DN is going to be build. 
Short example:
$myUFN = ldap_dn2ufn("cn=naaina, ou=container1, ou=container2, ou=container3, o=private, c=de");
echo $myUFN . "\n"; // will return "naaina, container1, container2, container3, private, de"
$myDN = $ldapObject->conv_ufn2dn($myUFN);
echo $myDN . "\n"; // will return "cn=naaina,ou=container1,ou=container2,ou=container3,o=private,c=de"
For the object name, $pHowToBuild["object"] is going to be used as prefix - for containers $pHowToBuild["container"] and for the last n elements $pHowToBuild["last"].
<?php
 function ldap_ufn2dn (
  $pUFN,
  $pDelimiter = ",",
  $pHowToBuild = array(
  "object" => "cn",
  "container" => "ou",
  "last" => array("o", "c")
  )
 ) 
 {
  $resultDN = null;
  
  if(!empty($pUFN)) {
   /* Check $pHowToBuild */
   if(is_array($pHowToBuild)) { 
    /* Check if required keys are existent */
    if(array_key_exists("object", $pHowToBuild) &&
     array_key_exists("container", $pHowToBuild) &&
     array_key_exists("last", $pHowToBuild)) 
    {
     $ufnArray = explode($pDelimiter, $pUFN);
     $ufnLast = count($ufnArray) - count($pHowToBuild["last"]); 
     /* Remove empty values */     
     foreach($ufnArray as $objKey => $objVal)
      if(empty($objVal))
       array_splice($ufnArray, $objKey, 1);
     
     /* Now build the DN ... */
     foreach($ufnArray as $objKey => $objVal) {
      $objVal = trim($objVal);
    
      if($objKey == 0) { 
       /* For the object */
       $resultDN .= $pHowToBuild["object"] . "=" . $objVal . ",";
      } elseif ($objKey >= $ufnLast) { 
       /* For last parts of the DN */
       $resultDN .= $pHowToBuild["last"][$objKey - $ufnLast] . "=" . $objVal;
       if(($objKey - $ufnLast - 1) != 0) {
        $resultDN .= ",";
       }
      } else { 
       /* For containers */
       $resultDN .= $pHowToBuild["container"] . "=" . $objVal . ",";
      }
     }
    } 
   }  
  } 
  
  return $resultDN;
 }
?>

The function of bryan will only work if you start with an Organization and using only an Organizational Unit as a container and the object is an CN.
For example:
$DN = "CN=DNS,CN=Authorized Login Methods,CN=Security";
echo ($DN = ldap_dn2ufn($DN)) . "\n";
echo ($DN = ldap_ufn2dn($DN)) . "\n";
will echo:
DNS,Authorized Login Methods,Security
CN=DNS,OU=Authorized Login Methods,O=Security